Lightning-arrester.



F. B. WIEGAND.

LIGHTNING ARRESTER.

APPLICATION FILED APII.29. I9I5.

Patented Apr. 24, 1917.

INVENTOR UNITED sTATEs PATENT oEEIcE.

FREDERICK B. WIEGAND, 0F CLEVELAND, OHIO, ASSIGNOR TO THE NATIONAL ELEC- TBIC SPECIALTY COMPANY, OF TOLEDO, OHIO, A CORPORATION 0F OHIO.

LIGHTNING-ARRESTER.

Specification of Letters Patent.

Patented Apr. 24, 1917.

To all 'whom z't may concern:

f Be it known that I, FnEmcnrCK B. W1E- GAND, a citizen of the United States, and a resident of Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Lightniug-Arrester; and I do hereby declare the following to he a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

My invention relates to lightning arresters and it has for its object to provide an arrester which will ground the high potential ulsating destructive electric current produced in lightning dischargesand thereby protect electric apparatus from the effect of the discharge, such as, burning out of parts of the apparatus, wires, insulation, etc. By my invention is provided an arrester which is exceedingly eiectual in the protection of the apparatus in the circuit in which it may be connected and yet one wherein no ground ing of the electrical apparatus will result from the sparking or arcing across the terminals of the arrester which frequently occurs by reason of the discharge of the static electricity which may be locally produced by weather conditions as well as when there is a lightning discharge.

The invention may be contained in many forms of lightning arresters, all of which come within the purview of my claim hereinafter appended. To show the practicability of my invention l have selected one of such constructions as an example and shall describe it hereinafter. The construction described is illustrated in the accompanying drawings.

Figure 1 of the drawing illustrates a top view of the preferred form of construction containing my invention in lightning arresters. Fig. 2 is a side View of the construction illustrated in Fig. 1. Fig. 3 is a vertical, longitudinal, sectional view of the device illustrated in the other figures.

l, in the drawings, is a porcelain base or receptacle having holes 2, through which screws may be inserted for attaching the base 1 to a suitable support. The base 1 is provided with a recess or chamber 8 in which a permanent magnet 4 may be inserted. The magnet 4.- is also wound wlth the coils which not only keep the magnet magnetized but also operate. as choke coils to the pulsating current produced by a lightning discharge. The coils are connected together and to the terminals 6, formed of threaded l'bolts 7, that are secured in the top of the base or receptacle 1. The terminals 6 are provided with threaded washers 8 and also washers 9 and with lock nuts 10 for connecting the arrester in a circuit having instruments or apparatus to be protected. The current flows from one terminal through the coils 5 and out through the other terminal 6.

rEhe ground line is connected to the terminal 15 which in form of construction is substantially like the terminals G. The terminal 15 is secured in a central portion or bridge 1G of the base or receptacle l. It is also provided with a threaded washer 17, washers 1S and the lock nuts 19 for making connection with the ground line. lt is also provided with a spacing ring 20 located between the threaded washer 17 and the bridge 16. The bridge 16 rises above the side edges of the base 1 to form a boss 2l. Between the boss and the threaded washers 17 and about the spacing ring 2O is located a carbon disk 22. rlhe carbon disk 22 is positioned centrally with respect to the recess 23 formed in the top of the base 8 between the terminals G. The spacing ring 20 prevents the threaded washers 17 from breaking the carbon disks 22. The terminals 6 are provided with plates 24. The plates 24 are bent downward so as to extend over the ends of the base or receptacle 1. They also extend inward to a point in proximity to the disk 22. lThey are provided with teeth 25 which are cut arcuate to conform to the periphery of the disk 22 and extend to points in the vicinity of the periphery of the disk 22. rlhe teeth increases the density of the static electricity and permits an easy discharge thereof through the ground line connected to the terminal 15.

The permanent magnet 4 is provided with poles 30 which terminate in the bottom of the recess 23 and are located beneath the space formed between the terminal plates 24 and the disk 22. I The permanency of the magnetism of the magnet will at all times produce lines of force which will thread through the space between the disk 22 and the terminal plates 24 which will be suffi'- ciently great to disrupt the arcs that may be produced by grounding of the current to the terminal 15. The lines of force, produced by a part of the current passing through the coil 5 and the permanent magnet 4 when a lightning discharge or discharge of static electricity has grounded the circuit, will cause a disruption of the cur-4 rent flowing to the ground, that is, they will blow out the arc and thus restablish the circuit to its normal condition.

The permanent magnet 4 may be secured in the base or receptacle l in any suitable form. I have shown a filling of Wax or other insulating composition for inclosing the coils and magnet in the base l and in which the coils may be embedded.

The construction selected and described may be greatly varied in the arrangement and manufacture of its parts and in the substitution of elements having equivalent functions and such modifications may be used for many varied purposes and still contain the invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is,-

In a lightning arrester, the combination of a carbon disk, terminal plates located in juxtaposition to the carbon disk, a porcelain container having bosses for insulating and supporting the disk and plates above the container, binding posts extending through the terminal plates and the carbon disk and connected therewith and secured in the container.r an electromagnet haring coils connected to the binding posts extending through the terminal plates and located between the binding posts, the poles ol' the electromagnet located below the opposing edges of the carbon disk and the terminal plates, and a hardened plastic insulating.r material filling the porcelain container around the magnet.

In `testimony whereof, I have hereunto signed my name to this specification.

FRIGDE UCK B. lVIEGAND. 

